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831 area code: where it is and which numbers are reported

831 covers Salinas, Santa Cruz and Monterey in California. 502 numbers in it drew 526 complaints between Oct 2, 2025 and Oct 31, 2026.

About area code 831

LocationCalifornia
Main citiesSalinas, Santa Cruz, Monterey, Watsonville
Local time now
Time zonePacific
In service since1998
Numbers reported502
Complaints526
Most reported asDebt reduction, other, imposters

Reported 831 numbers

Most reported first. A number links to its own page once it has complaints from two or more days.

(831) 653-0697 3 complaints Debt reductionlast Oct 15, 2026
(831) 859-9072 2 complaints Otherlast Oct 28, 2026
(831) 480-2322 2 complaints Dropped calllast Oct 23, 2026
(831) 498-2903 2 complaints Debt reductionlast Oct 20, 2026
(831) 604-2124 2 complaints Otherlast Oct 20, 2026
(831) 921-1418 2 complaints Textslast Oct 20, 2026
(831) 996-5565 2 complaints Debt reductionlast Oct 20, 2026
(831) 999-4318 2 complaints Imposterslast Oct 19, 2026
(831) 231-2405 2 complaints Medicallast Oct 9, 2026
(831) 335-7604 2 complaints Tech supportlast Sep 28, 2026
(831) 220-3355 2 complaints Otherlast Sep 25, 2026
(831) 653-2262 2 complaints Prerecorded callslast Sep 18, 2026
(831) 607-4703 2 complaints Debt reductionlast Sep 10, 2026
(831) 777-0727 2 complaints Callslast Aug 25, 2026
(831) 777-1864 2 complaints Callslast Aug 24, 2026
(831) 401-5618 2 complaints Otherlast Aug 13, 2026
(831) 282-2970 2 complaints Home securitylast Aug 12, 2026
(831) 471-5651 2 complaints Imposterslast Aug 12, 2026
(831) 777-0175 2 complaints Otherlast Aug 3, 2026
(831) 837-4963 2 complaints Otherlast Jul 22, 2026
(831) 777-0054 2 complaints Dropped calllast Jul 20, 2026
(831) 305-6860 2 complaints Textslast Mar 22, 2026
(831) 215-9749 2 complaints Prerecorded callslast Feb 27, 2026
(831) 201-1316 1 complaint Debt reductionlast Oct 28, 2026
(831) 215-8454 1 complaint Imposterslast Oct 28, 2026

The 25 most reported of 502 numbers.

When 831 numbers were reported

Complaints a month, last 13 months

186 in the busiest month
NovDecJanFebMarAprMayJunJulAugSepOctNov
Complaints a month, last 13 months
November 2025: 1
December 2025: 1
January 2026: 2
February 2026: 6
March 2026: 3
April 2026: 5
May 2026: 6
June 2026: 4
July 2026: 60
August 2026: 103
September 2026: 149
October 2026: 186

Hour of day, as reported in complaints

Busiest around 10 am
12 am6 am12 pm6 pm
Hour of day, as reported in complaints
12 am: 2
1 am: 1
2 am: 1
3 am: 1
5 am: 1
6 am: 2
7 am: 8
8 am: 12
9 am: 49
10 am: 65
11 am: 62
12 pm: 64
1 pm: 49
2 pm: 34
3 pm: 32
4 pm: 29
5 pm: 25
6 pm: 26
7 pm: 10
8 pm: 5
9 pm: 5
11 pm: 1

The most reported 831 prefixes

Complaints by the three digits after the area code.

(831) 215
336%
(831) 777
316%
(831) 996
255%
(831) 999
224%
(831) 580
143%

831 numbers that unwanted calls gave to contact

Numbers in this area code that complaints named as the number a call or text asked people to contact.

(831) 529-4961 2 complaints
(831) 778-9835 1 complaint
(831) 243-5544 1 complaint from 1 caller ID
(831) 337-8832 1 complaint
(831) 226-8318 1 complaint
(831) 471-5676 1 complaint
(831) 498-5950 1 complaint
(831) 666-0845 1 complaint
(831) 202-3671 1 complaint
(831) 279-2845 1 complaint

Towns and cities in area code 831

21 places its numbers are assigned to, the ones with the most numbers first.

Check a number

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Sources

Complaints consumers filed with the FCC and FTC, Oct 2, 2025 to Oct 31, 2026. Bewary counts the reports and does not check each one. Scammers can fake the number that shows on your phone, so a reported number may belong to someone who never called you.

Other area codes in California

209213279310323341350369408415424442510530559562619626628650657661669707714738747760805818820840858909916925949951